Voltage filtering method for detecting point in circuit, switch state detecting method, and related apparatus

Abstract

A voltage filtering method for a detecting point in a circuit, a switch state detection method and a related apparatus, which may be used in the technical field of new energy, the voltage filtering method for a detecting point in a circuit including: continuously collecting multiple voltage data of a detecting point in a target circuit; respectively obtaining a plurality of voltage filtering values corresponding to the detecting point by preforming filter modes based on the multiple voltage data; comparing the plurality of voltage filtering values, and if the corresponding comparison result meets a preset condition, determining a voltage target value of the detecting point based on the plurality of voltage filtering values. The present disclosure effectively verifies the validity of the voltage filtering for the detecting point in the circuit, and then ensures the reliability of the voltage filtering for the detecting point, thereby effectively improving the accuracy and reliability of subsequent control or detection according to the filtered voltage.

1 . A voltage filtering method for a detecting point in a circuit, comprising:
 continuously collecting multiple voltage data of a detecting point in a target circuit;   respectively obtaining a plurality of voltage filtering values corresponding to the detecting point by preforming filter modes based on the multiple voltage data; and   comparing the plurality of voltage filtering values, and if the corresponding comparison result meets a preset condition, determining a voltage target value of the detecting point based on the plurality of voltage filtering values.   
     
     
         2 . The voltage filtering method for a detecting point according to  claim 1 , wherein if the comparison result does not meet the preset condition, then continuously collecting multiple voltage data of the detecting point again and obtaining a plurality of voltage filtering values corresponding to the detecting point again, until a comparison result obtained again meets the preset condition and the voltage target value of the detecting point is determined. 
     
     
         3 . The voltage filtering method for a detecting point according to  claim 1 , wherein the step of respectively obtaining the plurality of voltage filtering values corresponding to the detecting point by applying the filter modes based on the multiple voltage data comprises:
 performing a mean filter algorithm to calculate the mean value of the plurality of voltage data of the detecting point, to obtain a voltage mean value as a voltage filtering value of the detecting point; and   performing a median filter algorithm to calculate the median value of the plurality of voltage data of the detecting point, to obtain a voltage median value as another voltage filtering value of the detecting point.   
     
     
         4 . The voltage filtering method for a detecting point according to  claim 3 , wherein if the corresponding comparison result meets the preset condition, determining the voltage target value of the detecting point based on the plurality of voltage filtering values comprises:
 obtaining a difference value between the voltage mean value and the voltage median value and determining whether the difference value is smaller than the error threshold value, and if it is, determining the voltage target value of the detecting point based on the voltage mean value and the voltage median value.   
     
     
         5 . A switch state detection method, comprising:
 obtaining a voltage target value of a first detecting point after controlling a first switch to be closed, based on a voltage filtering method for a detecting point according to  claim 1 , wherein one end of the first switch is connected with a first resistor in the control guidance unit of a charging base, and the first detecting point is arranged at the other end of the first switch; and   determining whether the voltage target value of the first detecting point meets a first closing condition, and if so, determining that the first switch is currently in a closed state.   
     
     
         6 . The switch state detection method according to  claim 5 , wherein the charging base is a compatible new energy vehicle charging base configured to compatibility with multiple charging protocols. 
     
     
         7 . The switch state detection method according to  claim 6 , wherein the first closing condition comprises:
 the voltage target value of the first detecting point obtained after the first switch is controlled to be closed is not equal to the voltage target value of the first detecting point obtained in advance before the first switch is controlled to be closed, and the voltage target value of the first detecting point obtained after the first switch is controlled to be closed is within the voltage range corresponding to either of the charging protocols.   
     
     
         8 . The switch state detection method according to  claim 6 , wherein after the determining that the first switch is currently in the closed state, the switch state detection method further comprises:
 determining a target charging protocol corresponding to the voltage target value based on a preset voltage range corresponding to each of the charging protocols.   
     
     
         9 . The switch state detection method according to  claim 8 , wherein after determining the target charging protocol corresponding to the voltage target value, the switch state detection method further comprises:
 receiving a closing instruction for the second switch and controlling the second switch to close, wherein one end of the second switch is connected in series with the second resistor in the control guidance unit to form a first branch, the first branch is connected in parallel with a branch where the first resistor is located;   obtaining a voltage target value of the second detecting point based on the voltage filtering method for a detecting point, wherein a branch where the second detecting point is located is connected with the first branch; and   determining whether the voltage target value of the second detecting point meets a second closing condition, and if so, determining that the second switch is currently in a closed state.   
     
     
         10 . The switch state detection method according to  claim 9 , wherein the second closing condition comprises:
 the voltage target value of the second detecting point obtained after the second switch is controlled to be closed is not equal to the voltage target value of the second detecting point obtained in advance before the second switch is controlled to be closed.   
     
     
         11 . The switch state detection method according to  claim 9 , wherein after determining that the second switch is currently in a closed state, the switch state detection method further comprises:
 receiving a closing instruction for a selection switch, wherein the selection switch is arranged on a second branch which is respectively connected in parallel with the branch where the first resistor is located and the first branch;   controlling the selection switch to close to the control point corresponding to the target charging protocol based on the target charging protocol; wherein the control points corresponding to the charging protocols corresponding to one end of the selection switch are respectively connected with a resistor, and the other end of the selection switch is connected with the branch where the second detecting point is located;   obtaining again a voltage target value of the second detecting point based on the voltage filtering method for the detecting point; and   determining whether the voltage target value of the second detecting point that is obtained after the selection switch is controlled to close meets a third closing condition, and if so, determining that the selection switch is currently in a closed state.   
     
     
         12 . The switch state detection method according to  claim 11 , wherein the third closing condition comprises:
 the voltage target value of the second detecting point obtained after the selection switch is controlled to be closed is not equal to the voltage target value of the second detecting point obtained in advance before the selection switch is controlled to be closed.   
     
     
         13 . The switch state detection method according to  claim 7 , wherein each of the charging protocols comprises a ChaoJi charging standard, a GB 2015 charging standard and a CHAdeMO charging standard. 
     
     
         14 . A voltage filtering apparatus for a detecting point in a circuit, comprising:
 a voltage collection module configured to continuously collect multiple voltage data of a detecting point in a target circuit;   a voltage filtering module configured to respectively obtain a plurality of voltage filtering values corresponding to the detecting point by preforming filter modes based on the multiple voltage data; and   a microcontroller configured to compare the plurality of voltage filtering values, and if the corresponding comparison result meets a preset condition, determine a voltage target value of the detecting point based on the plurality of voltage filtering values.   
     
     
         15 . The voltage filtering apparatus for a detecting point according to  claim 14 , wherein the microcontroller is further configured to perform the following operation:
 if the comparison result does not meet the preset condition, controlling the voltage collection module to continuously collect multiple voltage data of the detecting point again and controlling the voltage filtering module to obtain a plurality of voltage filtering values corresponding to the detecting point again, until a comparison result obtained by the microcontroller again meets the preset condition and the voltage target value of the detecting point is determined.   
     
     
         16 . The voltage filtering apparatus for a detecting point according to  claim 14 , wherein the voltage filtering module comprises:
 a mean filter unit configured to perform a mean filter algorithm to calculate the mean value of the plurality of voltage data of the detecting point, to obtain a voltage mean value as a voltage filtering value of the detecting point; and   a median filter unit configured to perform a median filter algorithm to calculate the median value of the plurality of voltage data of the detecting point, to obtain a voltage median value as another voltage filtering value of the detecting point.   
     
     
         17 . The voltage filtering apparatus for a detecting point according to  claim 16 , wherein the microcontroller comprises:
 an error determination unit configured to obtain a difference value between the voltage mean value and the voltage median value and determining whether the difference value is smaller than the error threshold value, and if it is, determine the voltage target value of the detecting point based on the voltage mean value and the voltage median value.   
     
     
         18 - 28 . (canceled) 
     
     
         29 . The voltage filtering method for a detecting point according to  claim 2 , wherein the step of respectively obtaining the plurality of voltage filtering values corresponding to the detecting point by applying the filter modes based on the multiple voltage data comprises:
 performing a mean filter algorithm to calculate the mean value of the plurality of voltage data of the detecting point, to obtain a voltage mean value as a voltage filtering value of the detecting point; and   performing a median filter algorithm to calculate the median value of the plurality of voltage data of the detecting point, to obtain a voltage median value as another voltage filtering value of the detecting point.   
     
     
         30 . The voltage filtering method for a detecting point according to  claim 29 , wherein the comparing the plurality of voltage filtering values, and if the corresponding comparison result meets the preset condition, determining the voltage target value of the detecting point based on the plurality of voltage filtering values, comprises:
 obtaining a difference value between the voltage mean value and the voltage median value and determining whether the difference value is smaller than the error threshold value, and if it is, determining the voltage target value of the detecting point based on the voltage mean value and the voltage median value.